Patents Assigned to Hitachi
  • Patent number: 8145818
    Abstract: Provided is an access right managing method for a resource of a storage system, in which a management computer stores access right definition information of the resource, and resource correspondence information including information on a management program which manages another resource related to the resource managed by the management program. In case of which receiving an updating request of an access right of the resource, the management computer updates an access right based on the updating request of the access right, selects a management program of the resource whose access right is requested to be updated based on the resource correspondence information, transmits an updating request of an access right for a relative resource to a management computer which executes the selected management program, and in case of which the access right updating request of the related resource is received, updates the access right of the relative resource.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: March 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Murayama, Yuichi Yagawa
  • Patent number: 8142573
    Abstract: An R-T-B based sintered magnet includes both a light rare-earth element RL (which is at least one of Nd and Pr) and a heavy rare-earth element RH (which is at least one of Dy and Tb) and Nd2Fe14B type crystals as a main phase. The magnet has a first region, which includes either the heavy rare-earth element RH in a relatively low concentration or no heavy rare-earth elements RH at all, and a second region, which includes the heavy rare-earth element RH in a relatively high concentration. The first and second regions are combined together by going through a sintering process.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: March 27, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroya Kobayashi, Futoshi Kuniyoshi
  • Patent number: 8142294
    Abstract: A power transmitting shaft includes a coupling member, a cylindrical intermediate member, a tube member and an increased diameter portion. The coupling member connects to a counterpart. The cylindrical intermediate member is on a side of one end of the coupling member and has a mechanical strength larger than that of the coupling member. The tube member has one end portion connected to either one of an inner circumferential portion of the intermediate member and an outer circumferential portion of the intermediate member. The increased diameter portion is on one end portion of the intermediate member which is opposed to the one end of the coupling member in an axial direction of the power transmitting shaft. The increased diameter portion is connected with the one end of the coupling member in the axial direction.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: March 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Yasushi Akita, Yoshimichi Takano, Noriyuki Onihashi, Hiromichi Komai
  • Patent number: 8145602
    Abstract: An LU management table 61 that associates and stores the LU# of the P-Vol 10p and the LU# of the S-Vol 10s is provided. The CPU 53 specifies the LU# of the S-Vol 10s constituting the save source of the data with respect to the magnetic tape cartridge 74, acquires the LU# of the P-Vol 10p associated with the specified LU# from the LU management table 61, reads the saved data from the magnetic tape cartridge 74 storing the data by means of the magnetic tape drive 71, and stores the data read from the magnetic tape cartridge 74 to the P-Vol 10p with the acquired LU#. As a result, the data can be restored easily and properly to the P-Vol 10p.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 27, 2012
    Assignees: Hitachi, Ltd., Hitachi Computer Peripherals Co., Ltd.
    Inventor: Kazuhiro Usami
  • Patent number: 8144567
    Abstract: A multilayer optical disc has dimples and/or bumps on a surface of at least one of the layers. Dimensions of the dimples and/or bumps, such as size, frequency and pitch, are selected to generate frequency components in light reflected from the surface that are different from frequency of servo and/or information signals. A disc drive can then use an appropriate filter to remove signals produced by light reflections of an unintended layer.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 27, 2012
    Assignee: Hitachi, Ltd.
    Inventor: Akio Fukushima
  • Patent number: 8142626
    Abstract: An the electrode for electrolysis of an electrolytic solution comprises an electrode core serving as a base and a plurality of prominences formed on a surface of the electrode core, the prominences have each a leaf-shaped form and rises from the electrode core surface.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masatoshi Sugimasa, Akiyoshi Komura, Masafumi Nojima
  • Patent number: 8142249
    Abstract: To prevent bubbles from remaining when a transparent substrate is bonded via an adhesive with a display panel. A manufacturing method of a display device in which a transparent substrate is bonded with a display panel via an adhesive, including a coating step of coating the adhesive onto the display panel or the transparent substrate in a predetermined pattern, a bonding step of bonding the display panel and the transparent substrate via the adhesive after the coating step, and a curing step of curing the adhesive after the bonding step, characterized in that the adhesive has a viscosity of 2000 to 5000 mPa·s at the coating step, the display panel and the transparent substrate are bonded via the adhesive in a reduced pressure atmosphere lower than the atmospheric pressure in a state where the adhesive coated at the coating step is spread and the size of bubble is 1 mm or less at maximum at the bonding step, and the adhesive is cured by applying ultraviolet ray at the curing step.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: March 27, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Setsuo Kobayashi, Hiroaki Miwa, Katsuhiko Ishii, Shuji Iwasaki
  • Patent number: 8144096
    Abstract: Provided is a drive circuit low in power consumption and high in display quality for a liquid crystal display device that is used in a small-sized portable device. The liquid crystal display device includes liquid crystal display elements and a liquid crystal driving circuit. The liquid crystal driving circuit is mounted to one of the four sides of a liquid crystal display panel, and is capable of outputting two-system counter electrode voltages. A variable resistor circuit having a resistance value which is variably adjusted by a register is used to correct and output a gray scale voltage according to a position of a relevant scanning signal line. Equalization is also performed by short-circuiting two counter electrode signal lines.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: March 27, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Youichi Ooki, Hiroyuki Takahashi, Shigeo Adachi
  • Patent number: 8144382
    Abstract: The present invention enhances the repeatability of a low gray scale display of an image display device which uses oil layers. The enhancement of the repeatability of a low gray scale display can be realized by an image display device which includes a first insulation layer, a second insulation layer, a first oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a first insulation layer side, a second oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a second insulation layer side, first electrodes which are arranged outside the first insulation layer, and second electrodes which are arranged outside the second insulation layer.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: March 27, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takahiko Muneyoshi, Nobuaki Hayashi, Shoichi Uchino, Tomio Yaguchi, Akiko Iwata
  • Patent number: 8144557
    Abstract: An optical information recording/reproducing apparatus includes an optical source unit that emits an optical beam toward an optical information recording medium mounted on the apparatus, an optical receiving unit that receives a reflected beam of the optical beam reflected from the optical information recording medium or a transmitted beam of the optical beam transmitted through the optical information recording medium to output an output signal in response to the reflected beam or transmitted beam, and a distinction unit that discriminates whether the optical information recording medium is a hologram disk for recording information by using a holography or a reflection-type optical disk for reproducing information by virtue of the reflected beam, in accordance with the output signal output.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: March 27, 2012
    Assignee: Hitachi, Ltd.
    Inventor: Koichiro Nishimura
  • Patent number: 8143702
    Abstract: A group III-V nitride-based semiconductor substrate includes a group III-V nitride-based semiconductor crystal. A surface area of the substrate is greater than or equal to 45 cm2. A thickness of the substrate is greater than or equal to 200 ?m. An in-plane dislocation density of the substrate is less than or equal to 2×107 cm?2 in average. The in-plane dislocation density of the substrate is less than or equal to 150% of the average at maximum.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: March 27, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventor: Yuichi Oshima
  • Patent number: 8143175
    Abstract: The invention provides a dry etching method for performing a wiring process on a semiconductor substrate using a plasma etching apparatus, wherein the wiring process is performed without causing disconnection or deflection of the wiring. The invention provides a dry etching method for performing a wiring process on a semiconductor substrate using a plasma etching apparatus, wherein during a step for etching a material 12 to be etched using a mask pattern composed of a photoresist 15 and inorganic films 14 and 13 made of SiN, SiON, SiO and the like formed on the material 12 to be etched, a mixed gas formed of a halogen-based gas such as chlorine-containing gas or bromine-containing gas and at least one fluorine-containing gas selected from a group of fluorine-containing gases composed of CF4, CHF3, SF6 and NF3 is used to reduce the mask pattern and the processing dimension of the material to be etched substantially equally during processing of the material 12 to be etched.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: March 27, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Satoshi Une, Masamichi Sakaguchi, Kenichi Kuwabara, Tomoyoshi Ichimaru
  • Patent number: 8142025
    Abstract: According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: March 27, 2012
    Assignee: Hitachi Ltd.
    Inventors: Takuya Shimizu, Kentaro Kato
  • Patent number: 8143525
    Abstract: A solar cell lead wire includes a strip-shaped conductive material formed by rolling a wire, and upper and lower melt solder-plated layers formed to be flat on upper and lower surfaces, respectively, of the strip-shaped conductive material by supplying melt solder thereto.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 27, 2012
    Assignees: Hitachi Cable, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Hajime Nishi, Yuju Endo, Hiroyuki Akutsu, Hiroshi Bando, Iku Higashidani, Katsunori Sawahata, Yukio Ito, Hiroshi Okikawa
  • Patent number: 8141236
    Abstract: An apparatus for removal of retentive mechanisms retaining a cover of a component device. The apparatus includes a structure. The apparatus also includes a component device positioner coupled to the structure. The apparatus additionally includes a plurality of retentive mechanism removers coupled with the structure. Each of the plurality of retentive mechanism removers are configured for interoperability with each retention mechanism retaining a cover of a component device having a plurality of retention mechanisms disposed therein. The apparatus further includes a drive mechanism that is coupled with the structure. The drive mechanism is for rotation of each of the plurality of retentive mechanism removers, causing removal of each retention mechanism retaining the cover of the component device.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 27, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventors: Khaled M. Fawzi, Chandrasekaran Nagappan
  • Patent number: 8145384
    Abstract: The present invention provides a traveling speed reduction gear lubricating oil cooling device that enables optimal temperature control for lubricating oil delivered via a lubricating oil pump that can be started up with a relatively small motor without running the risk of damage to an oil cooler in a cold work environment even when a temperature sensor that detects the temperature of the lubricating oil is installed outside a wheel mounting sleeve. During a startup operation, provided that the detected temperature at a traveling motor is higher than the reference temperature, the lubricating oil pump is driven at a speed in a lower speed range relative to the normal operation speed range. In addition, during the startup operation, the rotation speed of the drive motor for the lubricating oil pump is increased in correspondence to a rise in the temperature detected by a lubricating oil temperature detection sensor.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: March 27, 2012
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Takayoshi Murahashi, Osamu Murakami, Kenji Itoh
  • Patent number: 8144929
    Abstract: A human pursuit system includes a plurality of cameras, shooting directions of which are directed toward a floor, are installed on a ceiling, a parallax of an object reflected in an overlapping image domain is calculated on the basis of at least a portion of the overlapping image domain where images are overlapped among shot images shot by the plurality of cameras, the object equal to or greater than a threshold value predetermined by the calculated parallax is detected as a human, a pattern image including the detected human object is extracted, and a pattern matching is applied to the extracted pattern image and the image shot by the camera to thereby pursue a human movement trajectory.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: March 27, 2012
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuya Takahashi, Wataru Ito, Mitsue Ito
  • Patent number: 8144297
    Abstract: A display device includes a pair of substrates with liquid crystal therebetween, and a plurality of pixel regions provided on one substrate. Each pixel region is constituted of one and another region including a switching element, a pixel electrode, and a counter electrode. In the one region, the counter electrode extends substantially planar at a center except at a periphery of the one region, and the pixel electrode is constituted of a first group of electrodes which extend in one direction and arranged in parallel at a first distance. In the another region the counter electrode is constituted of a group of electrodes which extend in one direction and arranged in parallel in a direction which intersects the one direction in the another region, and the pixel electrode is constituted of a second group of electrodes which extend in the one direction and arranged in parallel at a second distance.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: March 27, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa, Takahiro Ochiai, Hirotaka Imayama
  • Patent number: RE43267
    Abstract: When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 27, 2012
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Patent number: RE43268
    Abstract: When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 27, 2012
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa